Ki-ras Activation in Pancreatic Carcinomas of Syrian Hamsters Induced by N-nitrosobis(2-hydroxypropyl)amine

Overview

Journal Jpn J Cancer Res

Specialty Oncology

Date 1991 Sep 1

PMID 1657847

Citations 5

Authors

T Ushijima

M Tsutsumi

R Sakai

Y Ishizaka

F Takaku

Y Konishi

M Takahashi

T Sugimura

M Nagao

Affiliations

Soon will be listed here.

Abstract

Five pancreatic carcinomas induced by N-nitrosobis(2-hydroxypropyl)amine in Syrian golden hamsters were analyzed for activation of Ki-ras at codons 12 and 13, using the polymerase chain reaction and direct sequencing. The Ki-ras gene was shown to be activated in four of the five carcinomas, and the results were further confirmed by subcloning and sequencing. All the mutations involved a G-to-A transition at the second position of codon 12, which resulted in a change at the amino acid level from glycine to aspartic acid. This mutation is identical with that reported for pancreatic tumors of Syrian hamsters induced by N-nitrosobis(2-oxopropyl)amine.

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